package TCP.TCP4;


import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.Scanner;

public class TcpEchoClient {
    private Socket socket = null;
    //绑定服务器，与之建立联系
    public TcpEchoClient(String IP, int port) throws IOException {
        this.socket = new Socket(IP, port);
    }
    //启动客户端
    public void start() {
        Scanner scanner = new Scanner(System.in);
        try(InputStream inputStream = socket.getInputStream();
            OutputStream outputStream = socket.getOutputStream()) {
            while(true) {
                //1.从控制台输入请求
                System.out.print("->");
                String request = scanner.next();
                //2.发送请求
                PrintWriter printWriter = new PrintWriter(outputStream);
                printWriter.println(request);
                //刷新缓冲区
                printWriter.flush();
                //3.接收响应
                Scanner input = new Scanner(inputStream);
                String response = input.next();
                //4.打印日志
                System.out.println(response);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public static void main(String[] args) throws IOException {
        TcpEchoClient client = new TcpEchoClient("127.0.0.1", 9090);
        client.start();
    }
}
